Question

(a+b)² - a²+ b² find in factories method

Answer 1

Answer:

${(a + b)}^{2} - {a}^{2} + {b}^{2} \\ = {(a + b)}^{2} - ( {a}^{2} + {b}^{2} ) \\ = {a}^{2} + 2ab + {b}^{2} - {a}^{2} - {b}^{2} \\ = 2ab$

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